Vehicle sound generator apparatus and method for controlling the same

Abstract

The present invention provides a vehicle sound generator apparatus comprising a vehicle state sensing unit, a storage unit comprising a sound source storage unit and a reference data storage unit, a sound source playback unit, a sound source amplification unit, a sound output unit, and a control unit. The vehicle state sensing unit senses a vehicle speed, and the control unit calculates a corresponding shifting factor from the velocity shifting profile to correspond to the vehicle speed, and controls and outputs the sound pressure or the pitch of the operating sound. The present invention generate and control a virtual operating sound, which reflects a change in vehicle speed and time to generate a virtual sound that imitates a real internal combustion engine sound while increasing recognizability of a pedestrian so that the vehicle operating sound can be transferred to the driver and pedestrian to further secure safety of the pedestrian.

Description

technical field [0001] The present invention relates to a vehicle sound generator device and a control method thereof. More particularly, the present invention relates to an environment-friendly vehicle sound generator device that generates and controls a virtual sound (i.e., operation sound) reflecting changes in vehicle speed and time, and a control method thereof to generate sound while improving pedestrian recognizability. The virtual sound imitating the sound of a real internal combustion engine enables the sound of vehicle operation to be transmitted to drivers and pedestrians to further ensure the safety of pedestrians and allow drivers to drive safely. Background technique [0002] In recent years, due to energy consumption, the development of environmentally friendly vehicles as alternative means of transportation is being increasingly actively developed. Examples of representative environmentally friendly vehicles include hybrid vehicles, electric vehicles, hydrog...

AI Technical Summary

Problems solved by technology

For this reason, there are problems that accidents may occur because pedestrians do not recognize vehicles approaching pedestrians or vehicles in places such as alleys or indoor parking lots, and that it is difficult for drivers to recognize the starting state of vehicles because vehicle noise is not generated. or current status

[0004] In addition, vehicles including energy recharging systems such as electric vehicles, hydrogen fuel cell electric vehicles, etc. cause problems in that it is difficult to know whether recharging starts or ends; There is a serious shortage of hazard-related vehicle information, and it is very inconvenient to use the vehicle

In addition, this method has a problem in that, since the virtual warning sound is frequently turned on and off in a traffic jam state (that is, road traffic congestion) in which running and stopping of vehicles are repeated due to frequent speed changes, the speed of the fade-out function Nearby, pedestrians, drivers, or passengers may feel uncomfortable or uncomfortable in traffic jams

[0007] In addition, since this conventional technique outputs sound in a one-to-one manner so as to correspond to the vehicle speed, it may cause a wide gap between the output sound and the real vehicle operation sound.

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